Excel Average Function
AVERAGE takes multiple arguments in the form number1, number2, number3, etc. up to 255 total. Arguments can include numbers, cell references, ranges, arrays, and constants. Empty cells, and cells that contain text or logical values are ignored. However, zero (0) values are included. You can ignore zero (0) values with the AVERAGEIFS function, as explained below. The AVERAGE function will ignore logical values and numbers entered as text. If you need to include these values in the average, see the AVERAGEA function....